Concentrated hydrochloric acid, when kept in open air, sometimes produces a cloud of white fumes. The explanation for this is that [Guj CET 2004]
(A)Concentrated hydrochloric acid emits strongly smelling gas all the time
(B)Oxygen in air reacts with the emitted gas to form a cloud of chlorine gas
(C)Strong affinity of gas for moisture in the air results in the formation of droplets of liquid solution, which appear like cloudy smokeCorrect
(D)Due to its strong affinity for water, concentrated hydrochloric acid pulls moisture from the air towards itself; this moisture forms droplets of liquid, which appear as the cloudCorrect
Answer: (C),(D)
Solution
Fuming concentrated constantly releases gaseous , which has a very strong affinity for atmospheric water vapour; the gas absorbs moisture from the
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